“asctime - convert date and time to string”
“asctime_r - convert date and time to string (thread-safe)”
“clock - report CPU time used by a process”
“clock_gettime, clock_gettime64 - get time of a specified clock”
“cputime - calculate CPU time used by current task(BS2000)”
“ctime, ctime64 - convert date and time to string”
“ctime_r - thread-safe conversion of date and time to string”
“__DATE__ - macro for compilation date”
“daylight - daylight savings time variable”
“difftime, difftime64 - compute difference between two calendar time values”
“gmtime, gmtime64 - convert date and time to UTC”
“gmtime_r - convert date and time to UTC (thread-safe)”
“ftime, ftime64 - get date and time”
“getdate - convert time and date to user format”
“getitimer, setitimer - read or set”
"gettimeofday, gettimeofday64 - read current time of day"
“localtime, localtime64 - convert date and time to local time”
“localtime_r - convert date and time to string (thread-safe)”
“mktime, mktime64 - convert local time into time since the Epoch”
“__TIME__ - macro for compilation time”
“time, time64 - get time since the Epoch”
“timezone - variable for difference between local time and UTC”
“tzname - array variable for timezone strings”